The Sharp X68000 remains one of Japan’s most distinctive home computers, but age has become a serious concern for its internal power supply. Electrolytic…
Stories
Replacing the X68000 power supply with a Mean Well unit
Using the X68000 SCSI Bus With a Zip Drive for Backup
The Sharp X68000 remains remarkably useful for experimentation, game development, music production, and hardware preservation. Its SCSI interface also makes it…
Repairing Sticky Keys on the Sharp X68000
The Sharp X68000 keyboard is one of the most satisfying parts of the system to use. Its full-size layout, firm key travel, and distinctive Japanese computer…
Building an X68000 memory dump tool for crash analysis
A crash on the Sharp X68000 can leave behind far more evidence than a frozen screen suggests. The program counter may identify the failing instruction, the…
Building a Raspberry Pi floppy emulator for the X68000
The Sharp X68000 remains one of the most interesting Japanese home computers for hardware enthusiasts. Its custom architecture, high-quality graphics, and…
Adding a hardware volume control for the X68000 headphone jack
The Sharp X68000 has a distinctive sound character that belongs to its games, music software, and operating environment. Its headphone output is convenient for…
Programming a Human68k TSR to Display System Information
A terminate-and-stay-resident utility, or TSR, is a small program that remains in memory after its original command has finished. On a Sharp X68000 running…
Restoring Rubber Feet And Screws On The Sharp X68000
A Sharp X68000 can remain electrically sound while looking tired underneath. Missing case feet, flattened rubber pads, corroded screws, and damaged screw…
Creating a bootable X68000 game disk that works on all models
The Sharp X68000 family used several physical designs during its lifetime, from the original tower systems with 5.25-inch floppy drives to compact machines…
Building a Digital I/O Card for the X68000 Expansion Bus
The Sharp X68000 is an unusually welcoming platform for hardware experimentation. Its Motorola 68000 processor, accessible expansion architecture, and…
Nereid-X Expansion Board
A personally-produced LAN+USB+Memory expansion board for Sharp X68000 series computers. Multiple production runs were offered, including a final batch and a later revival reproduction run.
Power Supply Repair
X68 power supply repair and modification services were offered by the site owner, with documentation shared through diary entries spanning 2001–2006.
Server & Networking
Notes on FreeBSD administration, ISP changes, server migration, and networking topics. The site itself ran on FreeBSD with the hns diary system and Namazu search integration.
Get in touch
X68K.NET connects Sharp X68000 enthusiasts through community links and shared projects. Reach out with questions about the Nereid project or X68 resources.